Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Writer | Zirvede | 1987 | |
| Writer | The Towering Inferno | 1974 | |
| Writer | The Enforcer | 1976 | |
| Writer | Gecenin Sıcağında | 1967 | |
| Writer | Poseidon Macerası | 1972 | |
| Writer | Lanetliler Kasabası | 1960 | |
| Producer | Shaft | 1971 | |
| Writer | The Swarm | 1978 | |
| Writer | Charly | 1968 | |
| Writer | Shaft in Africa | 1973 | |
| Writer | The Killer Elite | 1975 | |
| Writer | Telefon | 1977 | |
| Writer | Marlowe | 1969 | |
| Writer | When Time Ran Out... | 1980 | |
| Writer | The New Centurions | 1972 | |
| Writer | The Slender Thread | 1965 | |
| Writer | Murphy's War | 1971 | |
| Writer | The Grass Harp | 1995 | |
| Writer | Nightfall | 1957 |